diff --git a/dev-build.sh b/dev-build.sh
index a7db099..098d119 100755
--- a/dev-build.sh
+++ b/dev-build.sh
@@ -79,6 +79,9 @@ export LD_LIBRARY_PATH
 echo "Installing PyInstaller..."
 ${PYTHON} -m pip install --upgrade pyinstaller
 
+echo "Installing cryptography 3.2.1"
+${PYTHON} -m pip install cryptography==3.2.1
+
 echo "Installing Pantalaimon..."
 CFLAGS=-I"${OLM_DIR}/usr/local/include -I${OLM_DIR}/usr/local/include" LDFLAGS="-L${OLM_DIR}/usr/local/lib" ${PYTHON} -m pip install --upgrade pantalaimon